Remember that in a pedigree, the male has square image while a female is round. Those affected with the trait in question are shaded, and the offspring should be placed according to their birth order, with the first-born placed on the left. It should also be noted that each generation occupies one row. The pedigree for the given problem is shown below.
Joshua, age 18, is color blind. His mother and father have normal vision, but his mother's father (Joshua's maternal grandfather) is color blind. All Joshua's other grandparents have normal color vision. Joshua has three sisters - Nikki (age 20), Shaneekwa (age 15), and Laticia (age 27), all with normal color vision. Joshua's oldest sister, Latecia, is married to a man with normal color vision; they have two children: a 9-year old color blind boy and a 4-year old girl with normal color vision.
Using correct symbol, annotation, and rules for pedigree construction, draw a pedigree of Joshua's family.
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
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Based on our data, we think this problem is relevant for Professor Bekker's class at UCF.